Dispensing pump



Dec, l1, 1934. E. w. s-HUGRT 983,819

DISPENSING PUMP Filed April 21, 1953 3 Sheets-Sheet l Mlm INVENTOR Dec. 11, 1934. E', W, SHUGART 1,983,819

DISPENSING PUMP Filed April 2l, 1953 5 Sheets-Sheet 2 INVENTOR ATTORNEYS E. W. SHUGART DISPENSING PUMP Dec. ll, 1934.

Filed April 2l, 1953 5 Sheets-Sheet 3' Patented Dec. 11, 13934 UNITED STATES @PATET OFFICE 8 Claims.

This invention relates to improvements in dispensing pumps for lubricating oil.

The objects of the invention are: First, to provide an improved pump construction in which the delivery of the oil will be conspicuous and visible for the satisfaction ofv the consumer.

Second, to provide an improved pump structure and operating gear for such a pump.

Third, to provide an improved electrically driven pump.

Fourth, to provide such a pump which can be readily adjusted to exactly calibrate the same.

Fifth, to provide such 'a pump which will effectively deliver one quart or a multiple number of quarts by successive action of the piston.

Sixth, to provide in such a pump an improved nozzle construction which will effectivelyv cut off the discharge at the nozzle tip.

Seventh, to provide such an arrangement or construction in which the motor can be controlled by connections at the nozzle.

Further objects and objects pertaining to details and economies of my inventionl will appear from the description to follow. The invention is dened and pointed out in the claims.

1 accomplish the results of my invention by the preferred embodiment of pump illustrated in the accompanying drawings, in which:

Fig. 1 is a plan View of apump embodying the features of my invention. y

'Fig.-2 is a detail slightly reduced end elevation from the left-hand end of Fig. 1, a portion of the casing being broken away to show 35 'details and the delivery pipe and electric switch connection being shown in sections.V

Fig. 3 is a detail vertical slightly reduced sec-k tional elevation taken on a line corresponding to line 3 3 of Figs. 1, 2 and 4, parts of the Vmechanismbeing'shown in full lines.

Fig. 3A isa vertical section on line'3A-3A of Fig. 3 showing details of the pump piston and the manner of adjusting it.

Fig. 4 is an enlarged detail sectional plan i .through the pump cylinder taken on line 4 4Y of Figs. 2 and 3.

Fig. 5'is an enlarged detail vertical section View through the improved nozzle taken on line 5 5. of Fig. 2, portions being in fulllines.' I

taken on line 6 6 of Fig. 2.

Fig. 7 is an enlarged detail transverse sectional View on line 7 7 of Fig. l showing details of the parts. It has an upright portion 2 which conpump cylinder is retained in place by cap screws Fig. 6 is an enlargeddetail sectional elevation view on line 8 8 of Fig. 3, showing the details of the cross head and the pitman and coupling rod connection.

Fig. 9 is an enlarged detail vertical sectional view on line 9 9 of Fig. 3, showing details of the check valve structure.

Fig. 10 vis a detail sectional elevational view on line '10.'. 10 of Fig. 3, showing details of the control.

Fig. 11 'is a detail sectionalelevation on line 11 11V of Fig. 1 of the electricmotor.

Fig. 12 is a detail sectional View on line 12 12 offFig.` 3 showing details of construction.

Fig. 13 is adetailsectional view'on line 13 13 of Fig. 1, showing the connection of the driving pinion to the driven gear.

The parts will be identified by their numerals of 'reference which are the same in all the views.

1 is the base casting carrying the remaining stitutes. VaY shell-like casing and terminates in the pump cylinder base 3.' This is extended into a platformY 4 at the bottom which carries the-.electric motor 5 which has an internal reduced gear. structure connected for driving'the pump.

6 is the pump cylinder of glass, having a head 7 with a delivery pipe 8 connected vto flexible hose '9 terminating at the nozzle 10. The head 7 is flanged at 71 to embrace the end of the cylinder 6 and is provided with a suitable gasket ring 72. A flange`31 surrounds the cylinder base and receives the lower end of the glass pump cylinder 6 andis provided with a gasket 32. The

73 entering through suitable ears 74 on the head 7 and extending into ears 33 on the base 3 see Figs. 1, .2 and 3.

AThe pump is'a single acting pump discharging 'on 'the up-stroke It has 'a 'hydraulic pistonv head 11 with the usual hydraulic packings and check valves 12 see Fig. 3.

The piston rod 13 extendsy through stuffing box 14 and is connected to crosshead 15 by the 45 cross pin 16 in 4any well known way. The crossheadr` 15 reciprocates `in ways ,17, which are cast integrally with the shell 2. Detachable flanges 171 embrace the edges of the crosshead 15.

A boss 18 is cast integrally with the casing f 2 and contains a journal bearing 181 in which is supported a journal pin 19 to which is secured the driven gear 20.

On the driven gear 20 is the adjustable wrist pin. 21 to` which is connected the pitman 22. This 55 2&1

is made eccentric to its shank 211 which extends through the said driven gear 20 and is clamped thereto by the clamping nut 23 as seen detailed in Fig. 6. The end of the shank 211 is slotted at 212 for a screw-driver or wrench whereby the wrist pin 21 is adjustable because it is eccentric to the said shank 211.

The gear 20 is driven by the pinion 24 on the driven shaft 25 of the electric motor 5-see Fig. 13. On the shaft 25 is a slipping spring clutch 26' of usual construction. From this it will be seen that when the pump is actuated by the motor, it will be actuated by the motor driv-` ing the shaft 25 which through the friction clutch 25 drives the pinion 24 which, being in0 mesh with the gear 20 through pitman 22, actuates,

the piston rod 13 and thus operates the pump.

On the up-stroke of the pump; it discharges They is the cylindrical end of the pipe carrying the" fixed collar 92. The end is plugged at 93 and there are lateral discharge openings 94. Av hollow valve member 101 is provided with a stuiing box 102 which is adapted to reciprocate on the cylindrical portion 91 of the pipe. 'I'his part is internally screw-threaded at 103. 104 is an adjustable sleeve screw-threaded within. the member 103 with the cylindrical bore 105 adapted to reciprocate overrthe collar 92. This is provided with a central discharge aperture 106, and is flanged at 107 to embrace and coact with the plug 93 to complete the cut-oiffvalve. This is held yieldingly in place bythe compression spring 108 `reacting against the collar 92 and the top end of the valve member.

The motor 5 is provided with a switch 51 to which is connected a Bourdon tube 52 extend-` ing to lever 53 iulcrumed at 54 on the side of the pipe 9 whereby the motor is under instant control by the operator when he is delivering oil at the nozzle. I-Ie does not need to cut 01TV the motor at precisely the right point because when he cuts ofi the oil,-the slip clutch will permit the motor to run withoutfany effecten the pump.

Secured to .the shaft 19 `is the driving pinion 27 which drives the control gear 28 whichisl journaledion pin 29. This gear=28 is provided with a perforation 30 to-receive the spring pressed stoppin 31. The spring pressed stopl pin.. 31 is .carried in socket 32 on the outer end of the arm 33 which is also pivotedon the: pin 29.`

A face plate 34 embraces the-.face of the gear;-

23 and is provided with a series oi holes V35 through which the stop pin 31 mayV be projected. The pin` 31. is provided with a knob 31 by which it can be withdrawn from` the apertures 35 and adjusted to `any point desired and allowed to project yieldingly through any of thel apertures 35.

The control wheel 28 will traveluntil. the hole 30 is brought oppositethe pin 31 when it will snap in and stop .the pump. This gear 28 is of such ratio andis so timed that an vevolution of the pump will occur While the gear 28 is moving one interval. deliver one quart to the consumer, he sets the` pin 31 one notch ahead. If it is desired to pump and deliver two quarts, it is set ahead two intervals. If a gallon or four quarts is desired, four intervals. The operator in delivering lubricant sets the pin ahead one interval for one quart, two intervals for two quarts, andthe pump Zautomatically pumps that much. The motor slips" Thus if the user desires to pump andv on its slip clutch until the valve 10 is opened. When that valve is opened, the pump can run until the valve is closed again or until the pump is stopped by the stop pin 31. When the pump is stopped by either means, the clutch slips and the motor is allowed to run until the cut-off lever 53 is operated and stops the motor.

The pump is placed upon the head of an oil drum 39. The intake pipe 40 leads up to connection 41' to the base of. thepump.. Acheck valve 42 cooperates withl the pump. It'consists of a casing 43 with a lid valve 44 held to place byrthe usual spring 45-see Fig. 9.

I show a gear 46 for a counter device secured to the-back of the gear 28 geared to drive the pinion47 of the counter 43 to operate the counter. As my invention does not pertain to the counter, I havenot detailed-it.

I providefa slotted head 49 on the shaft 19 for a crank'connection to operate the pump in case of 5 power failure;

While I have described myrimproved pump as. a pump for dispensing oil, itis adapted for use wherever it isY desired to; dispense liquid, and whether it beor quart size or larger or smaller isnotimportant.

Having thus described my invention, what11i claim as new and( desire-to secureebyLetters Patent, is:

1; Ina dispensingpump structure, thecombination or a suitable base, an electric;.motor withA areducing gear mounted thereon, a; supporting frame on Vsaidbase withy a :pump cylinder 'base formedwthereon, a `pump. cylinder with discharge at its upper end-and withintakey at-its lower,V end, a hydraulic `piston v.therein with suitable. pump check valve, a .piston lrod `with. crosshead, cooperating with said pumppiston, argear;

with pitman connection for actuatingsaid .pump piston, aslip .clutch between the said gear and the saidimotor,v adischargepipe from the said cylinder with springiclosed cut-ofi" valve, and an.operating lever carriedA by the discharge; pipe withv connection` to control the switch of. said motor whereby the amount ofoil fed can be controlled at the nozzle` by` the stopping of said motor.

2., In a, dispensing pump,` the'combination with?` a deliveryfpipe, an automatic cut-01T valve therefor `l,comprising acylindrical portion` at the end of said pipe with lateral openings, a stop collarA thereon,Y a cross plugqacross the end, av reciprocating valvememberwith central Idischarge ap,-

a slip clutchponnection in-the drive of said4 pump, a discharge pipefromy said. pump.; anl

automaticspring closed cut-oizvalve at the discharge pipe= adapted to be openedagainst pressure and close automatically, andan-,automatic means .to stop ,the said Apump Vfor measuring vthe amount dispensed. by ysaid pump.

4. In adispensing-,pump structure, thezcombination lotra cylinder, arpiston 4in-said cylinder, an

electric motor means fondriving the same; a slip clutch connection in the drive yof-said-a pump, a

discharge pipe fromsaid pump, an automatic.` spring closed cut-oir Valve at the. discharge tpipe.`

adapt-edj to `be @opened iagainstvpressure; and:- close automatically, and a means to stop the said pump for measuring the amount dispensed by said Dump.

5. In a dispensing pump structure, the combination of a cylinder, a piston in said cylinder, an electric motor means for driving the same, a slip clutch connection in the drive of said pump, a discharge pipe from said pump, an automatic spring closed cut-oil valve at the discharge pipe adapted to open under pressure and close automatically, and means to stop the said pump comprising a rotary disk gear driven by the gearing of said pump containing a stop pin aperture,l an adjustable spring pressed stop pin associated therewith and adjustable in the path of said stop pin aperture, and a control plate in front of said disk gear with apertures at intervals to receive the said adjustable spring pressed stop pin to engage the said stop pin aperture in said disk at predetermined points to permit the actuation of the pump to the desired extent for measuring the amount dispensed by said pump.

6. In a dispensing pump structure, the combination of a cylinder, a piston in said cylinder, an electric motor means for driving the same, a slip clutch connection in the drive of said pump, a discharge pipe from said pump, an automatic spring closed cut-off valve at the discharge pipe adapted to open under pressure and close automatically, and a means to stop the said pump comprising a rotary member driven by the said pump with a stop member means associated therewith, a control plate in front of said movable member, and an adjustable stop carried thereby to cooperate with the movable stop member to stop the pump at a predetermined point for measuring the amount dispensed by said pump.

7. In a dispensing means, the combination of a delivery pipe with closed end and lateral openings, a cylindrical valve member embracing the end of said pipe in spaced relation thereto, a stuffing box between the said parts, a flanged valve member cooperating with the end of said pipe, and spring means for holding the said valve yieldingly in position against the end of the pipe, as specied.

8. In a dispensing means, the combination with a delivery pipe having closed end with lateral openings, of a cylindrical spring pressed Valve memberv embracing said pipe in spaced relation and having a central opening at its end adapted to yield under pressure for the discharge therefrom and to close automatically when the pressure is relieved.

ERNEST W. SHUGART. 

